Attachment for sewing machines



Aug. 22, 1933. c, H, SANBORN ATTACHMENT FOR SEWING MACHINES- Patented Aug. 22, 1933 UNITED STATES 1,923,556 ATTACHMENT FOR SEWING MACHINES Charles H. Sanborn, Newburyport, Mass, as-

signor to Haley, Cate, Roclrwood 00., End, Everett, Hass., a Corporation of Massachusetts Application July 14, 1930. Serial No. 467,691

4 Claims. (01. 112152) My present invention relates to sewing machines, and more particularly to a novel and improved attachment for sewing machines for use in the manufacture of boots or shoes.

The device of the present application isnot limited to use in the manufacture of boots and shoes, but may be utilized for the construction of other articles, such as gloves, or any article wherein a pi ing or beading is interposed between two layers of material for the purpose of ornamentation.

An important object of the present invention is the provision of a device which will enable said piping or beading to be fed between said two layers of material, and which device will also include means to guide the edges of the layers between which the piping is interposed.

Another object of the invention resides in the construction of an attachment wherein all of said guiding elements are integral with each other.

Another object of the invention resides in the fact that my novel attachment is readily detachable from the sewing machine to which it is applied, thus enabling the removal and replacement of attachments having different sizes and arrangements of guiding elements.

Another object of the invention resides in 0 constructing my novel guiding attachment with a tubular guiding channel therethrough, said channel being slightly inclined downwardly from the entrance to the outlet thereof, and said.

channel or tubular guide being slightly arcuate r to enable the feeding therein andpassage there through of the piping or beading without interference with the other two layers being fed through the device.

A further, novel, and improved object of my present invention is the provision of a floating or suspended tube used in the attaching of two or more articles, the suspended tube constituting the guide for one of said articles. Preferably, and as hereinafter described and claimed, this suspended or floating tubular guide is utilized to feed one strip or layer to be united over another layer and under a third layer, so that the single line of stitching can unite all three.

I believe that the provision of a sewing machine device or attachment comprising such a suspended tube is distinctly new.

Other objects and features of the invention reside in the particular construction and arrangement of the various parts of my novel attachment, and the above and other objects of the invention, details of construction, combinations of parts and advantages, will be hereinafter more fully pointed out, described and claimed.

Referring to the drawing illustrating a preferred embodiment of the present invention,

Fig. l is a side elevation of my novel'attachment amxed to the head of a sewing machine;

Fig. 2 is a rear elevation;

Fig. 3 is a vertical sectional view on the line 3-3 of Fig. 1; r

Fig. 4 is a cross sectional view on the line 4--4 of Fig. 1;

Fig. 5 is a partial perspective view of my attachment;

Fig. 6 is a cross sectional view similar to Fig. illustrating the device in operation; i

Fig. 7 is a partial perspective view of a slight modification; and

Fig. 8 is a cross sectional view similar to Fig.

6, illustrating the operation of the modified attachment of Fig. 7.

Referring to the drawing, for a particular description of the invention, its construction and operation, 1 designates the head of a conventio'nal sewing machine,.2 being the usual needle affixed to a vertically reciprocating needle bar, not shown, and 3 is the presser foot.

My novel attachment comprises a vertically projecting body 4 having an'enlarged upper end 5 secured to the head 1 by screws 6, a perpendicular flange 7 being formed thereon for strength and reenforcement. Integral with the body 4, and at the bottom thereof, is a curved guiding face or portion 8, and formed in the bottom of the attachment, and below the guide 8, is a tubular guiding channel 9,this channel being inclined slightly from the rear end 10 to the front thereof, and also being slightly curved as clearly shown in Fig. 4.

Depending from the base 11 of the device is a curved guiding face or portion 12, facing but spaced. from the guide 8. From a glance at Fig. 3 it will be seen that the side 13 of the tubular slot 9 is spaced slightly inward from the guiding face 8.

In operation, two layers of material, such, for example, as the vamp 14 of a shoe upper, and the quarter 15 are fed along my device, the edge 16 of the vamp being guided by the face 8 and the edge 17 of the quarter being guided by the face 12." Simultaneously With the feeding of the layers 14 and 15 throughthe device, a beading or piping 18 is fed through the guiding slot 9. Because of the spacing of'the face 8 and theside 13 of the slot 9, there will be provided a slight exposed marginal edge of the piping 18 beyond the marginal edge 16 of the layer 14. The piping 18 may be of any contrasting color or material desired, for ornamental purposes.

As the three layers 14, 15 and 18 pass the front of the guiding attachment, they are united by a single row of stitching 19, applied by the needle 2 through and through the three layers 14, 15 and 18. Because of the curved shape of the guiding slot 9, the piping 18 may be fed there'into at one side of the layer 14, without interference therewith. The inclining of the channel 9, also, will facilitate feeding of the pip ing 18 therethrough, such feeding being effected in the usual manner. 1

Should it be desired to have a greater or less exposed portion of the piping 18, the attachment 4 may be readily removed fromthe head 1 by simply removing the screws 6 and replacing the attachment with another attachment wherein the side 13 of the guiding slot 9 will have a different position relative to the guiding face 8, the relation of the face 8 to the side 13 of the slot 9 predetermining the exposed portion of the piping 18.

It will also be noted that the guiding faces 8 and 12, as well as the forward upper surface of the base 11 are rounded, or arcuate, to facilitate passage of the materials thereby and thereover. The attachment just described is particularly advantageous in the manufacture of boots and shoes, but should it be desired to carry out my process on materials wherein thelayer 15 has no edge 1'7 which must be positioned exactly relative to the edge 16 of the layer 14, the attachment illustrated in Figs. '7 and 8 may be utilized.

This attachment of Figs '7 and 8 is substan tially identical with the attachment of Figs. 1 to 6 inclusive, with the exception of the guiding face 12. When utilizing this attachment, the layer 20, which may be considered as the body portion of a glove, for example, to which it is desired to attach a layer 21 and beading 22, is located under theentire attachment, the guiding of the layer 21 and piping 22 being all that is required.

The spacing of the piping 22 relative to the edge 23 of the layer 21 is accomplished in the .same manner as shown in Fig. 3, that is, by the relative positions of the guiding face and the side 13 of the tubular slot 9.

The three layers 20, 21 and 22 are united by a single row of stitching 24.

By utilizing my novel guiding attachment, one usual operation inthe manufacture of articles of this nature is eliminated. For example, in the manufacture of boots and shoes, it has heretofore been customary to first stitch the piping to the throat margin of the vamp by a line of stitching, and to then unite the assembled vamp and piping to a quarter by a second line of stitching extending completely through the three layers. My invention, therefore, results in a saving of time, labor and material, thus decreasing the cost of manufacture of articles constructed according to my invention.

While I have necessarily described my present invention somewhat in detail, it will be appreciated that I may vary the size, shape and arrangement of parts within reasonably wide limits,,without departing from the spirit of the invention.

My invention is further described and defined in the form of claims as follows:

1. An attachment for sewing machines comprising a base having a curved guiding slot thei'ethrough, a guide integral with and above said base and adjacent to one side of said slot, and a guide integral with and below said base and at the opposite side of said slot.

2. An attachment for sewing machines comprising an inclined base having a curved guiding slot therethrough, a guide integral with and above said base and adjacent to one side of said slot, and a guide integral with and below said base and at the other side of said slot.

3. An attachment for sewing machines including sewing instrumentalities, comprising a support fixed to and depending from said machine, a base offset from said support and adapted to be positioned between two layers to be united by the sewing instrumentalities, said base having a curved tubular guiding slot therein to guide a third layer between said first two layers, a guide integral with and above said base and at one side of said slot and having a curved material-engaging face, and a guide integral with and below said base and at the opposite side of said slot and having a curved; material-engaging face.

4. An attachment for sewing machines including sewing instrumentalities, comprising a support fixed to and depending from said machine, and a base offset from said support and inclined relatively thereto and adapted to be positioned between two layers to be united by the sewing instrumentalities, said base having a longitudinally curved tubular guiding slot therein to guide a third layer between said first two 

